Compct Flash companies have started to put this on the CF cards. They are not cheap I was wondering if UDMA is worth the money. Many photographers are wondering what the new Ultra Direct Memory Access (UDMA) protocolmeans for CompactFlash (CF) memory cards, and how this technology allows CF cards to readand write data at much higher speeds than before. The key to understanding what the newprotocol means for the industry is to fully realize the capabilities of this new technology, and howthose capabilities positively impact photographers. However the cars them selfs are not cheap so if your thinking about UDMA do some shoping around first.To find out mor on UDMA and UDMA CF cards click here.